observability-engineering

Han

Ship-ready code from your AI coding agent. 139+ plugins for quality gates, tooling, memory, and specialized agents — so your AI writes code that's ready to merge.

Getting Started

Two commands. That's it.

# 1. Install the CLI
curl -fsSL https://han.guru/install.sh | bash

# 2. Auto-detect and install plugins for your project
han plugin install --auto

Next time you use Claude Code, validation hooks run automatically when you finish a conversation.

Alternative Installation

# Homebrew (macOS/Linux)
brew install thebushidocollective/tap/han

How It Works

1. Install - One command installs the CLI and auto-detects plugins for your stack
2. Code - Claude writes code as usual. No workflow changes needed
3. Validate - Stop hooks run automatically. Linters, formatters, type checkers, and tests are all verified
4. Learn - Local metrics track success rates and calibrate confidence. Nothing leaves your machine

Plugin Categories

139 plugins across six categories:

Category	Description	Examples
Core	Essential infrastructure. Auto-installs han binary, provides metrics and MCP servers	Always required
Languages	Validation plugins for your language/runtime	TypeScript, Rust, Python, Go, Ruby
Validation	Linters, formatters, and quality tools	Biome, ESLint, ShellCheck, Pytest
Disciplines	Specialized AI agents for engineering domains	Security, accessibility, API design, architecture
Services	MCP servers for external platforms	GitHub, GitLab, Linear
Tools	MCP servers for development utilities	Playwright, Blueprints, Context7

Browse all plugins at han.guru/plugins

Why It Works

• Smart Caching - Only runs validation when relevant files change. Native Rust hashing keeps it fast
• Local Metrics - Tracks task success and confidence calibration. All data stays on your machine
• Zero Config - Binary auto-installs on first session. --auto flag detects your stack automatically
• Any Stack - TypeScript, Python, Rust, Go, Ruby, Elixir. If there's a linter, there's a plugin

CLI Commands

# Install plugins
han plugin install              # Interactive mode
han plugin install --auto       # Auto-detect your stack
han plugin install <name>       # Install specific plugin

# Manage plugins
han plugin search <query>       # Search marketplace
han plugin uninstall <name>     # Remove plugin

# Run hooks manually
han hook run <plugin> <hook>    # Run a specific hook
han hook explain                # Show configured hooks

# MCP server
han mcp                         # Start MCP server for natural language hook execution

Documentation

Full documentation at han.guru/docs

Contributing

See CONTRIBUTING.md for how to create new plugins.

License

MIT License - see LICENSE

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Built by The Bushido Collective